Shaker apparatus



June 27, 1933. J' J KRATZ 1,915,539

SHAKER APPARATUS Filed Oct. 14, 1951 77 7 (JOHN c/ K 72.

' Fatented June 27 1933 Lassie PATENT FFHQE JOHN J. KBATZ, OFWILKES-BARRE, PENNSYLVANIA I SHAKER ArrAnATUs Application filed October14, 1931. Serial No. 568,818.

This invention relates to improvements in shaker apparatus for use inconnection with coal breakers.

. The primary object of the invention resides in a means for suspendingthe shaker members of a shaker apparatus to enable the reciprocationthereof in the usual manner but which avoids the objection present inthe type v of construction now employed wherein fre quent breakage isexperienced in the spring suspension arms and the connection between thearms and the shaker members when in operation.

Another object of the invention is to provide a coal shaker constructionwherein the shaker suspending arms are of a springy nature to facilitatelongitudinal reciprocation and wherein the connection between the armsand the shaker members permits of an angular adjustment of the arms toproduce a free hack and forth working movement of the said shakermembers.

With these. and other objects in view, the invention resides in thecertain novel construction, combination and arrangement of parts, theessential features of which are hereinafter fully described, areparticularly pointed out in the appended claims, and are illustrated inthe accompanying drawing in which:

' Figure 1 is an end elevational view of a series of shaker membersmounted in accordance with my invention and showing a portion of thesupporting structure in cross section,

Figure 2 is a fragmentary side elevational view of the same,

Figure 3 is a fragmentary front elevational view of the lower end of oneof the spring suspension arms with parts shown in sec tion,

Figure 4 is a vertical transverse sectional view on the line 1-4E ofFigure 3,

' Figure v5 is a horizontal sectional view on the line 5-5 of Figure 3.

Referring to the drawing by reference characters, the numeral 10designates a pair of spaced vertical posts which form part of asupporting structure and which posts support horizontally disposedgirders or beams in, the axis of which extends at right angles 11; thenumeral 12 designates a coal shaker member and in Figures 1 and 2, aseries of these members have been shown, the same being disposed oneover the other in spaced relation and beingof increasing width from theuppermost shaker member to the lowermost shaker member. These shakermembers are of the conventional construction in thatthey are providedwith a perforated body'in'the form of a plate 13 while angle irons 14extend lengthwise of the body for the full length thereof to confine thecoal to the shaker. It will of course he understood that theperforations in the various shaker members varyin size, that is, theuppermost shaker member is provided with larger perforations than thosebeneath the same. The shaker members may be of the desired length andextending transversely of the same at spaced distances are crossbars orrods 15 secured to the underside of the perforated body 13 while theends of the rods 15 are rounded and extend outwardly beyond the oppositesides of the shaker members as at 16.

The shaker members are extended from the supporting structure by fiatspring members, or arms 16, each of which is bolted or otherwise fixedlyconnected to cross bars 17 which bridge the spaced girders 11. A groupof these-arms 16 are bolted to a plurality of the cross bars 17 asillustrated in Figure 2 for the purpose of suspending the several shakermembers 15 at a point adjacent each other. Connecting the lower ends ofthe spring arms 16 with the shaker members are universal connections,each of which comprises a plate 18, the upper end of which is formedwith side flanges 19 adapted to embrace opposite sides of a spring arm16 while passing through the-plate 18 and to the lower ends of the arms16 are securing elements in the form of bolts 20 the lower end of eachplate 18 extends beyond the arm 16 to which it is connected and isrounded. Associated with the plate 18 is a bearing member whichcomprises a flat rounded head or gear 21 which flatly engages the plate18 and is pivoted thereto as at 22. A hearing member is formed with aboss 23 having a bore 24 thereto the axis of the pivot 22 and which borereceives a rounded end 16' of a rod 15. The rounded end or pintle 16 ofeach rod extends through the bore and receives a collar 25 whichprevents the sliding of the bearing member from the rod.

The head 21 is provided with opposed arcuate shaped slots 26 throughwhich pins 27 carried by the plate 18 extend. This pin and slotconnection permits of thelateral adjustment of the arm 16 to variousangular positions and when adjusted, the same is secured by nuts 28which are threaded tothe outer ends of the pins 27.

With reference to Figure 1 of the drawing, it'will be seen that thearms16 are arranged in-pairs forsuspending opposite sides of the shakermembers and'which members are permitted of a free back and forthmovement by reason of the pivotal, connection affixed to one endof saidmember and extending therebeyond, and a bearing member pivoted to saidplate and having a bore extending at right angles to the axis of thepivot, and means for preventing pivotal movement of said bearing memberwith respect to said plate, said means includin arcuate shaped slotsprovided in said bearing member, and threaded studs carried by saidplate and extending through the respective arcuate shaped slots, andnuts' t-hreadedly connected to the free ends of said threaded studs.

, In testimony whereof I aflix my signature.

JOHN J. KRATZ.

forded between the bearing members; and i the rounded endsof the crossbars '15. Due

to the fact that the width of the shaker members gradually increasesfrom-the uppermost shaker member to the lowermost, the arms will bedisposed at different angular positions which is permitted by the pinand slot connection between the plate 18 and the hearing member-21.Although'no means has been shown to imparta back and forth orreciproeating motion to therespective shaker memhers, it will beunderstoodthat any means maybe provided therefor as applicants inventionresides .primarilyin. the means of supporting the shaker members in aposition to be reciprocated. .It is believed that the structure hereinshown and described will overcome the objection in previousconstructions wherein difliculty'has been experienced in providingastrong connection between the spring arms and the shaker members andone which will permit of the angular adjustment of the arms relative tothe said shakermembers.

While I have shown and described what I deemfito bethe most desirableembodiment of my invention,'I wish it to be understood that variouschanges as come Within the scope ofthe appended claims may be resortedto if desired. I, 7

Having thus described theinventiomwhat is claimed asnew and what it isdesired to secure by Letters-Patent of the United States,

15; p 1. A suspension device for coal shakers comprising a flat springymember," 'a plate fixejd to one endof said member and extendingtherebeyond, and a bearing member pivoted to said plate and having abore extending at right angles to theaxis of the pivot,"and adjustablemeans for preventing pivotal movement of said bearing member withrespect toxsaid plate.

2. A suspension device for coal shakers comprising, a flat springymember, a plate

